· Semantic Scholar extracted view of "Microstructure and mechanical behavior of cemented gold/tungsten mine tailings-crushed rock backfill: Effects of rock gradation and content." by Zhiqiang Huang et al. DOI: 10.1016/j.jenvman.2023.117897 Corpus ID: 258087866
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· Class 1-4 Crushed Rock. These are often used for roads and highways but they can also be used for heavy-traffic driveways. They are typically graded and compacted to form a rigid, stable base and covered with asphalt. B-grade Crushed Rock (BCR) and Fine Crushed Rock (FCR) These are both used as bases in a similar way for
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The results of a laboratory study on the dynamic behaviour of layered samples of waste glass (G) mixed with crushed rock (R) in road applications are presented in this paper.
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· Groundwater inrush induced by collapse columns in crushed rock mass is a significant problem in deep mining operations. A study on the behaviour of soil-geotextile systems in filtration tests Can. Geotech. J.,
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· The examination of non-uniform deformation and re-crushing characteristics of crushed rock and coal is fundamental to understand porous structure evolution of the caved zone. This paper proposed a new index to evaluate the re-crushing degree of mixed crushed limestone based on an innovative compression–acoustic
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· Crushed waste rocks (CWR) are widely used to build mine haul roads. However, the permanent deformation in waste rocks layers can result in surface rutting. Realistic prediction of pavement rutting requires models that can accurately capture the permanent deformation behaviour under repeated loading.
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1. Micro hardness tests of compressed crushed rock indicate that the plastic behaviour of powder of ductile rocks, in this case a marble, resembles that of intact rock, irrespective of the deformation history of the crushed material. The inelastic deformation of such rocks under a bit can then be treated by plasticity theory. 2. The deformation properties of
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· Abstract and Figures. The objective of this work was to compare the fracture energy of mortar and concretes produced with crushed rock and pebble aggregates using zero, 10, 20, 30 and 40% of
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· One which is able to measure some rocks’ ability to recover mechanical strength after repeated crushing, and one which measures the production of fines (0/0.125 mm) during crushing.
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· The leaching behaviour of a road construction with fayalitic copper slag, recycled concrete and crushed rock as sub-base materials was monitored over ten years. All studied materials used in the road construction, including crushed rock, contained concentrations of several elements exceeding the guideline values recommended by the
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Hydrated cement treated crushed rock (HCTCRB) is widely used as a base course material for Western Australian roads. In order to be able to use this material effectively, its shear strength, resilient modulus and permanent deformation characteristics should be investigated and understood. This study aimed to present the results of…
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2 · For rock in natural slopes, the influence of the creeping behaviour of the rock is mainly due to natural environmental effects, such as lithology, rock structure, axial
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Deformation Behaviour of Crushed Waste Rock Under Lateral Cyclic Loading. Gangue (waste rock) is a kind of solid waste generated in coal mining, entry excavation and coal preparation (Du et al. 2019; Mohammadi et al. 2019; Xiao et al. 2020), and its discharge amount normally accounts for about 15% of coal production.
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Behaviour of the Crushed Zone in Rock Indentation 203 punch. After breaking, the crushed discs are compressed further under semi- confinement. This is simulated by the sample container design, the diam- eter of which ( ~ 10 ram) slightly
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· The cement-treated crushed rock base, or a cement-treated base (CTB), is a mixture of road base aggregate, Portland cement, and water. The material is designed and suitable for the road pavement structure with high
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:Gradation EffectsRock GradationAggregate GradationCrushed rock flow behavior is better explained when considering the shear resistance as viscous resistance rather than frictional resistance. We found two phases of flow
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· The variation law of rock mechanical behaviour and the space–time evolution law of the surface radial strain field in the progressive failure process are analysed. The results show that, as the seepage pressure increases, the rock peak stress decreases and the Young's modulus increases, and the mechanical properties of the rock are easily
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Request PDF | On Jul 1, 2023, Yanqiao Zhou and others published Thermal-deformation behavior of a crushed-rock embankment along a high-grade highway in permafrost regions
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· Tailings' particle size, crushed rock content and gradation utterly affected the failure modes of CTCRB. Ettringite/CSH gel was found to be the leading hydration materials in the backfill matrix. The micro-cracks within CTCRB specimens were unfavorably correlated with its UCS data.
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· At low concentrations (<1.0·10 -6 M) cesiumwas sorbed on the frayed edge sites of biotite and once these sites are fully occupied cesium sorbs additionally to the Type II and Planar sites. As a consequence, the sorption of cesium on biotite is decreased at concentrations >1.0·10 -6 M. Secondly cesium sorption on potassium feldspar and
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· During the past decade, cooling measures, including crushed-rock layers, ventilation ducts, and thermosyphons, have been successfully applied in the construction of roads and railways to cool down
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:Civil EngineeringRock DeformationLateral Cyclic Loading · The crushed rock embankments (CREs) are very common in permafrost regions due to their unique cooling performance. In this study, we explored the thermal
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· The Effects of Moisture Characteristics of Crushed Rock Base (CRB) March 2011. DOI: 10.1061/41165 (397)456. Conference: Geo-Frontiers Congress 2011. Authors: Komsun Siripun. Peerapong Jitsangiam
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· Finally, cesium sorption behavior on crushed granodiorite followed the trend of one of its most abundant mineral, plagioclase with distribution coefficient values of 0.107±0.003 m3/kg in 10-8 M. At low concentrations (<1.0·10-6 M) cesiumwas sorbed on the frayed edge sites of biotite and once these sites are fully occupied cesium sorbs
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· groundwater inrush in crushed rock mass with high water pressure is a seepage-type conversion process of pore flow to crack flow to pipe flow, accompanied by changes of the interior structure. Qiao et al. (Qiao, Hu, &
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Numerous studies have been conducted to investigate the thermal stability of crushed rock embankments (CREs). In this study, we developed an automatic field monitoring system for a CRE during the construction of the Gonghe–Yushu High-grade Highway (GYHH) to explore both the convective cooling and the deformation controlling effect of the crushed
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DOI: 10.1016/j.enggeo.2019.105453 Corpus ID: 213930139 Cooling performance and deformation behavior of crushed-rock embankments on the Qinghai-Tibet Railway in permafrost regions @article{Tai2020CoolingPA, title={Cooling performance and deformation
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:Publish Year:2016This paper aims to report the mechanical behaviour of hydrated cement treated crushed rock base (HCTCRB) as granular road base material subjected to repeated cyclic loads from Repeated Loads Triaxial (RLT) tests with various stress paths in order to improve more understanding of such Western Australian roads based materials on mechanistic
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:Publish Year:2020Cooling DeformationDeformation in Right Shoulder · Therefore, it is very important to study the deformation behaviour of crushed waste rock under lateral cyclic loading for effectively controlling the overlying
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Fluid‐Like Behavior of Crushed Rock Flows Article in Journal of Geophysic al Research: Earth Surface · October 2022 DOI: 10.1029/2021JF006523 CITATIONS 0 READS 134 8 authors , including: Some o f the authors of this public ation are also w orking on
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Trituradora de piedra vendida por proveedores certificados, como trituradoras de mandíbula/cono/impacto/móvil, etc.
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